CODEWITHSUNDEEP
javajsonunicodeutf-8jackson
ricb
ricb

Reputation: 1217

Write ObjectNode to JSON String with UTF-8 Characters to Escaped ASCII

I would like to write the contents of Jackson's ObjectNode to a string with the UTF-8 characters written as ASCII (Unicode escaped).

Here is a sample method:

private String writeUnicodeString() {
    ObjectMapper mapper = new ObjectMapper();
    ObjectNode node = mapper.getNodeFactory().objectNode();
    node.put("field1", "Maël Hörz");
    return node.toString();
}

By default, this outputs:

{"field1":"Maël Hörz"}

What I would like it to output is:

{"field1":"Ma\u00EBl H\u00F6rz"}

How can I accomplish this?

Upvotes: 43

Views: 77223

Answers (2)

Alexey Gavrilov
Alexey Gavrilov

Reputation: 10853

You should enable the JsonGenerator feature which controls the escaping of the non-ASCII characters. Here is an example:

ObjectMapper mapper = new ObjectMapper();
mapper.getFactory().configure(JsonGenerator.Feature.ESCAPE_NON_ASCII, true);
ObjectNode node = mapper.getNodeFactory().objectNode();
node.put("field1", "Maël Hörz");
System.out.println(mapper.writeValueAsString(node));

The output is:

{"field1":"Ma\u00EBl H\u00F6rz"}

Upvotes: 68

Kailas010
Kailas010

Reputation: 435

JsonGenerator is deprecated use JsonWriteFeature instead of it.

mapper.getFactory().configure(JsonWriteFeature.ESCAPE_NON_ASCII.mappedFeature(), true);

Upvotes: 12

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